Pith Number

pith:7UDM2L4B

pith:2018:7UDM2L4BZY4VLZTBVUZV3TYQLS

not attested not anchored not stored refs pending

Signal Alignment for Humanoid Skeletons via the Globally Optimal Reparameterization Algorithm

Gregory S. Chirikjian, Sipu Ruan, Thomas W. Mitchel

arxiv:1807.07432 v2 · 2018-07-18 · cs.CV · math.OC

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7UDM2L4BZY4VLZTBVUZV3TYQLS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:10:16.214794Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd06cd2f81ce3955e661ad335dcf105c9abc1a07e42d6d8a9140fa3e77c78aa1

Aliases

arxiv: 1807.07432 · arxiv_version: 1807.07432v2 · doi: 10.48550/arxiv.1807.07432 · pith_short_12: 7UDM2L4BZY4V · pith_short_16: 7UDM2L4BZY4VLZTB · pith_short_8: 7UDM2L4B

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/7UDM2L4BZY4VLZTBVUZV3TYQLS \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: fd06cd2f81ce3955e661ad335dcf105c9abc1a07e42d6d8a9140fa3e77c78aa1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b2654241054c47ac1f3a0ba5411f24034bac352bb3c4c55373901177b133d42c",
    "cross_cats_sorted": [
      "math.OC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-07-18T03:16:39Z",
    "title_canon_sha256": "b4ca49b6e835dbfb29bfe928b7b3c44830face3bd25c229aecabcdd91398efb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07432",
    "kind": "arxiv",
    "version": 2
  }
}